WO2012110638A1

WO2012110638A1 - Continuous track for a tracked chassis

Info

Publication number: WO2012110638A1
Application number: PCT/EP2012/052776
Authority: WO
Inventors: Holger HAUT; Michael Dietrich
Original assignee: Simertis Gmbh
Priority date: 2011-02-18
Filing date: 2012-02-17
Publication date: 2012-08-23
Also published as: CN103717485A; EP2675695A1; AU2012216979A1; EP2675695B1; US9533722B2; CN103717485B; US20150353153A1; AU2012216979B2

Abstract

The invention relates to a tracked chassis, comprising a continuous track, which comprises ground plates (15) coupled so as to be rotatable relative to each other and which is guided by means of a driven sprocket (10) having at least one toothed ring (11) in order to drive the continuous track, wherein each individual ground plate (15) has at least one hump link (16) having hump link flanks (17) oriented in the running direction of the continuous track and the hump links (16) are designed to engage in recesses (13) formed between radially protruding teeth (12) arranged on the circumference of the sprocket (10) while the continuous track circulates over the sprocket (10), characterized in that the ground plates (15) are coupled to each other by means of at least one connecting sideplate (19), which is arranged between the ground plates and which allows the ground plates (15) to shift in parallel relative to each other, and the ground plates are in planar contact with the hump link flanks (17) while the continuous track circulates over the sprocket (10).

Description

Caterpillar hook chain for a crawler track

Description

The invention relates to a crawler undercarriage with a mutually rotatably coupled floor plates existing, endless and to drive them via a driven, at least one cam ring having Turas run caterpillar track chain, where j ede individual base plate each wen at least one humpback with rectified direction of the caterpillar track chain oriented Höckerschakenflanken and the cusps when passing the caterpillar track chain over the turrets for engaging in intervening radially arranged cams disposed on the circumference of the turret, are arranged in a direction.

Known crawler tracks generally have an additional track formed on the tars and caterpillar track chain for supporting the links on the turret, with the turret engaging either over the faces of the turrets and / or over a face formed on the turret disk The Schaken ausgebi ldeten supported flat surfaces.

A crawler undercarriage with the features mentioned above is known from the gat- tungsbüdendeh DE 44 44 982 AI, with the Turas in this type of crawler chassis with the Sti rnflächen his Turasnocken. the chain links is supported, so that a corresponding track is formed. The belonging to the known crawler track caterpillar is designed as a so-called Schakerikette, in which on e ezelnen floor panels of the caterpillar chain in each case a Höckerschake (shoe) with aligned in the running direction of the caterpillar track Hakenschakenflanken (Sch is hnasen) arranged. The individual floor panels are coupled to each other via interlocking relationship overlapping areas and engaging therein bolt connections directly to each other. As far as the caterpillar track chain is guided to its drive via a driven Turas (Antriebstromtnel), the shoes grip in between on the drive drum be strengthened drum lugs (Turasnocken) existing interstices ei nu nd nd upon rotation of the drive bstromme! taken from the drum lobes. In the known crawler track two mutually spaced Turasse are provided, which in each case at the same distance on the. Floor plates arranged Höckerschaken (shoes) are assigned. The drum lugs as well as the shoes have relatively steeply standing and each having an arcuate course Schuhnaseneingri ffsoberflächen or Schuhnasen on. so that in any case at an equal division of shoes and drum noses a formschlüssi ger intervention of.

Shoes and the inter mediate between the drums nose inter mediate spaces is given to the drive drum, so that the shoes of the caterpillar chain of the two successive oc ken ausgebi ldeten, each gegenüberl ing Schuhnaseneingriffsoberflächen the drums are detected and pushed. In DE 44 44 982 A 1, the problem occurring with such crawler tracks is explained, that with increasing operation, an accidentally elongation of the crawler chain is accompanied by an enlargement of its pitch. This results in the beschri flat structure of the crawler track to a restriction of the individual Sch uhe in the recesses of the drive drum, so that thereby the wear on both the shoes and the drum lobes is reinforced. To give him the opportunity create, without a complete disassembly of the crawler undercarriage whose operational readiness, are in the known crawler di e drum lugs on the drive drum detachable and arranged with an adjustable radial distance to the drive drum, so that by a displacement of the drum lugs radially outward, the distance between the S In the case of the drum noses, it can be increased in size and thus adapted to the increase in the distance of the shoe noses when the length of the caterpillar crawler is approaching. Thus, the career formed by the end faces of the Turasnocken or drum noses can be maintained,

With the known crawler track initially has the disadvantage that when a chain elongation occurs a correction of the position of the drum lugs. Turas must be connected with the corresponding wall. Furthermore, with the bekante measure the problem of chain squeezing the Turaseingriff j edoch ni cht eliminated fundamentally, because due to the immediacy ble lignification of the individual floor panels together a single floor plate in its circulation on the drive drum not see the position of the drum lugs align, but is influenced in its position to the drive drum by the position of the leading as well as the subsequent base plate. So a misalignment of the floor panels with the shoes attached to them can not be excluded and can not be compensated even in the event of an occurrence.

From DE 44 21 001 AI, a drive system for a track is already known in soft Turas on both sides: its cylindrical drive body outer Umfangsfl surfaces as a track for the bottom plates of the caterpillar track chain has. The chain links engage with formed thereon triangular teeth in the existing between the cylindrical Antriebskörpera recesses, so that a linear shaped attachment of the drive body to the tooth / flank is the result. In this case, the individual chain links are interconnected by connecting straps whose attachments to the connected chain links in each case form rotary axes for pivoting in during the running-in process one after the other into engagement with the drive bodies of the Turas. In the known drive system, it is a question of wear by reducing the vibrations occurring due to the arrangement of rubber spacings for the drive bodies or of rubber bandages for the running surfaces. The behavior of the chain in an incoming chains! change is not addressed,

In DE 22 59 352 A, a chain drive for vehicles is further described, in which the cams of the Turas and the hawthorn the

Chain links an angular shape, flank with straight cams and. Have Höckerschakenflanken, in which j edoch as in the described in DE 44 44 982 AI crawler track an additional career by resting the faces of the Turasnocken on separate, on the Schaken the Kettengl formed re support surfaces results, the cam heads of Turasnocken on a towards Tura's concentric and career-defining diameters. Since the power transmission takes place through the respective surfaces of Turasnocken and Höckerschaken coming into contact with one another, two geometrically independent surfaces are required for driving and guiding the chain in such a chain drive.

The invention has for its object to provide a crawler undercarriage with the features mentioned at the disposal de en, in which the state of a chain constraint avoided when circulating the floor panels over the associated Turas and thus the occurrence of wear on Turas and Höckerschaken the floor panels is reduced , The solution of this problem arises, including advantageous embodiments and modifications of the invention from the content of the claims, which are followed by this description.

The basic idea of the invention is that the bottom plates are coupled to each other at least one connecting plate arranged between them, a parallel displacement of the bottom plates against each other, and the cams and the humps each have an angular shape with rectilinear cam flanks and bumpshaped flanks such that During one revolution of the caterpillar track chain over the turrets, the leading cam flanks of all cams engaged with the cuspidors engage in flat contact in all wear states of the caterpillar track chain. the Höckerschakenflanken are such that a tread-like Abstiitzung the caterpillar track chain on the Turas exclusively to the Nockenf hen and Höckerschakenflanken the revealing each engaged cam and Höckerschaken is given, and that tion in the case of a stress-induced elongation of the connecting straps and associated magnification the splitting of the caterpillar track due to the parallel displacement of two adjacent floor plates permitted by the at least one connecting link, the cusp-hook flanks of the tarmac in engagement with the Turas starting with the last engaged cusp-paw, until the first engaging cusp-pawl on the cams of the successive cams slide outwards while maintaining the surface contact, so that the centers of the respective effective contact surfaces between humps and lobes cams on a spiralf örmigen orbit around the center of the Turas lie. This is the first time realized with the invention, the construction principle of a crawler chassis without an additional career, in which now the Abstützimg the caterpillar chain on the Antriebsturas exclusively to the Nockenfl anken and Höckerschakenflanken the jaw in the Urnlauf ls engaged cam and Höckerschaken is given because on the one hand the cams of the Turas in the area of the connection lashing! intervene between the trained at the individual floor plates hawser or in the existing between the Höckerschaken gaps and on the other hand the Höckerschaken are flattened at their engaging in the existing between the cams of the Turas recesses face area so that no frontal Abstötzung the Höckerschaken on the Turas indicates. Thus, the formation of an existing in addition to the flank support of cam and hunchback career is avoided.

The invention has the advantage in that respect that in the present invention constructed from the bottom plates and the connecting plates as chain links caterpillar track chains an additional degree of freedom is set up. Since due to the involvement of the V erbi ndungsl ash n between the floor plates in addition to the continued given rotatability of the floor panels against each other now also a parallel displacement of the floor panels against each other, in the circulation of inventively designed caterpillar track on an associated Antriebsturas the bottom plates now in each case one of take the position of each leading and subsequent floor plate inde pendent position on the Turasumfang. In connection therewith the cam of the Turas and the Höckerschaken is in each case given an angular shape with straight Fl.an.ken, so that the Höckerschaken with their Höckerschakenflanken with a change of their position to Turasumfang on the cam flanks of the Turas can slide, without that a flat arrangement of the abutting flanges is abandoned. This brings with it the advantage of a minimum areal price. Due to this configuration, further Ensures that even with a widening division of the caterpillar cleats due to wear, the surface area of all tucked hooks that are in each case in engagement with the Turas is maintained without having to make any changes to the turret or the chain links. In this respect, it remains in all wear states of Raiipenschakenkette according to the invention in a distribution of the transferred. Driving force on a plurality of each standing in engagement with the Turas chain links in the form of fastened to the bottom plates hedge bite.

According to one embodiment, it can be provided with respect to the design of the rocker rod chain m new condition that the bumpers intervene so far in the existing between the Turasnocken recesses that abut in the new state of Raiipenschakenkette engaging between two cams Höckerschakeii on the one hand leading cam flanks and sie on the opposite side at least l in ien- formally supported on the opposite rear Noc kenflanke of the adjacent direction of rotation cam. However, the invention also includes the idea that in the new condition of the chain, the hawthorn claws lie flat with their two bumps on the cam lobes of the turf.

In order to improve the orientation of the individual floor slabs when engaging their bumpers in the cam ring of the door, according to an example of the invention, the angle of the bump hook hooks with the floor slab is between 10 and 75 degrees ; As far as such a shallow angle, when engaged with the Turas, makes it possible to displace the base plates relative to the Turas cams, it will be understood that the determination of the angle is determined by the material and the bias on the Raiipenschakenkette Driving forces in an individual case dependent friction conditions is determined. The inventive design of the caterpillar track chain also allows a chain structure in which only the worn parts must be changed; it will usually be the connecting straps, which can be arranged accessible, arranged,

For this purpose, according to a first exemplary embodiment of the invention, it is provided that two connecting straps are arranged on both sides of the hump shackles of adjacent floor slabs, it being possible to provide that each connecting slat has its end holes drilled on it. Tucked hook mounted bolt is placed.

In a construction of a caterpillar track chain with both sides of the Höckersc hook arranged guide webs k ann may be provided accordingly that the bolts for receiving the Verbindungsl ashes are arranged on the guide webs.

To stabilize the position and movement of the connecting straps with respect to the connected thereto floor panels can be provided that the humps each floor plate are enclosed on both sides of guide webs and with distance to the two-sided guide webs in each case an additional holding web is arranged on the bottom plate, said in each case a connecting link is arranged in the intermediate space between the guide webs and the retaining webs and fixed to bolts fixed in retaining webs and guide webs,

The embodiment of the invention is also applicable to crawler tracks and caterpillar chains in which two congruent with each other arranged at the Turas cam rings and on the mutually coupled floor panels two arranged in the same, corresponding distance rows of Höckerschaken are provided, such as a structure basically from the DE 10 2008 021 126 A 1 is known, in which is described at a Turas the formation of a M i ttelsteges between two outer cam rings as Lau fbahn for the chain links. In the context of such an embodiment can be provided according to an embodiment of the invention, class each a connecting plate between two floor panels in the existing between the two Höckerschaken each bottom plate space is arranged, the Höckerschaken j each case openings for inserting the connecting plate by cross and thus bearing bolts exhibit. In such an embodiment, the aupenschakenkette nämli ch can be distorted on a lying in the distance between the two cam rings and laying on the floor panels center web, so that in the space thus obtained the associated connection lug is to be arranged. As far as in the known embodiment of the central web ensures a parallel to the drive axis j parallel alignment of the bottom plates, according to the invention, the orientation due to the surface of the j eweils arranged in parallel on a base plate Höckerschaken flank on the associated cam flanks of the two cam rings.

In the drawing, embodiments of the invention are shown, which are described below. Show it:

Fig. 1 a cam ring having Antriebsturas for a

Crawler undercarriage in a perspective view.

Fig. 2 shows three by means of connecting plates coupled together B odenplatten a caterpillar track with arranged on the bottom plates and vo seitl Iien F ührungsstegen enclosed Höckerschaken. FIG. 3 shows the caterpillar track chain corresponding to the pitch of the cam ring in an embodiment according to FIG. 2 when circulating over a track in accordance with FIG.

FIG. 4 shows the circulation of a caterpillar track chain according to FIG. 3 with a caterpillar track chain showing a wear, FIG.

Fig. 5, the R aupenschakenkette according to Figure 3 in a modified

embodiment,

Fi g. 6 a Turas with two spaced apart

Cam rings in a perspective view corresponding to Figure 2,

Fig. 7 a plurality of bottom plates one for circulation over a

Turas according to Figure 6 suitable caterpillar chain,

The drive turret 10 provided for the crawler track of a chassis in FIG. 1 d consists of a cam ring 1 1 extending over its circumference with radially projecting cams 12 and recesses 13 formed therebetween. The cams 12 have an angular shape with rectilinear Noc kenilanken 14 , wherein the outer cam tips are flattened.

As can be seen from FIG. 2, a horseshoe 16 is mounted on the bottom plates 15 of a caterpillar track 1 for circulation via a tura 10 in accordance with FIG. 1, which has humpback flanks 1 7 aligned on both sides in the running direction of the caterpillar chain and likewise at its tip are flattened. Each hack Schake 1 6 a bottom plate 1 5 is enclosed laterally of Führiitigsstegen 1 8, which are mounted on the respective bottom plate 15. The single nen floor plates - π -

15 are coupled by means of Verbindungsiaschen 19 against each other rotatably, wherein the Verbindungsiaschen 19 with each arranged at their outer ends holes 20 on the outside on the lateral guide webs 1 8 mounted «tightly illustrated bolts pushed and can be fixed thereto.

There is an aupenschakenkette with trained according to Figure 2 and coupled to each other bottom plates 1 5 in circulation via a shown in. Figure 1 Turas 10 with cam ring 1 1, it can be seen from Figure 3 that upon rotation of the Turas clockwise the Höckerschakenflanken 1 7 all in engagement with the cam 12 standing Höckerschaken

1 6 j ewei ls in a Flächchenkontakt with the leading cam edge 14a, while on the opposite side of the Hoecker Schke 1 6 a rather linienförmi ge Abstiltzung the associated Höckerschakenfl nke 1 7 on the rear cam edge 14b of the adjacent cam 12 in the direction of rotation Forming an angular, radially outwardly opening gap 30 results. This condition, however, only during a period, in which no discernible wear has occurred, so far as the division of the caterpillar track chain with the means of Verbindun slaves 1 9 coupled to each other bottom plates 1 5 with the division of the cam ring 1 1 located cam 12 coincides. In such, only Hnienförmi gene Abstiltzung the requirements of a dimensionally accurate production are reduced because when manufacturing the chain in their new condition does not have to be turned off on a precisely fitting engagement of the hawser in the recesses of the Turas, However, the invention includes such a precise engagement but not enough.

From Figure 3 it is further apparent that, on the one hand, the cams 12 of the turf 10 in the area of Verbindungsiaschen 19 between the formed on the individual base plates 1 5 hawkers 16 and in between

Engagement with the recesses 13 of the cam ring 1 1 standing hawser 1 6 of the standing floor plates 15 is valid, the surface pressure is reduced in the range of each individual honeypot 1.6 and j edes single cam 12, so that the power transmission is improved. The structure of the caterpillar track chain according to Figure 2 makes it possible to change after reaching a predetermined state of wear, only the connecting straps 1 and thus to put the caterpillar track in iron corresponding "new condition".

In the embodiment shown in Figure 5, in addition to the humps 16 each bottom plate 15 enclosing. Guide webs 1 8 spaced apart holding webs 21 mounted on each bottom plate 1 5, wherein the Verbindungsl ashes 19 now in each case in the space 24 between the respective guide web 1 8 and the associated holding web 21 and arranged accordingly in the retaining webs 21 and the guide webs 18, not shown in detail. Bolts are fixed.

In the figures 6 and 7, an embodiment of the invention is shown, in which the Antriebsturas 10 two spaced apart congruent cam rings 1 1 with a formed between the cam rings 1 1 distance 22 (Figure 6).

Correspondingly, two hump shackles 16 arranged at a distance corresponding to the distance 22 between the cam rings 1 1 are fastened to the bottom plates 15 of an associated track chain chain shown in FIG. 7, which hurdles over the turrets 10 (see also FIG 4) at the same time in the. the two. Cam rings 1 1 trained recesses 1 3 engage. In this case, the between the. Höckerschaken 16 given gap 23 used to arrange the Verbmdungslaschen 1 9, wherein in the bumps 16 each holes 25 are formed, in which the Verbi-tion asschen 1 9 fixing pins are used (not shown). Insofar as, in the case of a circumference on the caterpillar track chain shown in FIG. 7, a tappet Turas 10 shown in FIG. Railele alignment of arranged on a bottom plate 1 5 Höc k erschakenflanken 1 7 erg to the associated Nock edflanken 14 of the two cam rings 1 1 erg, the drive turf 1 0 requires no additional La uffläche for the transmission of. Vertical forces, such as those in the prior art according to the gattun gsbi i denden DE 10 2008 02 1 126 AI realized with the intended arrangement of a central web,

The features disclosed in the foregoing description, the claims, the abstract and the drawings of the subject matter of these documents may be essential individually as well as in any combination with each other for the realization of the invention in its various embodiments.

Claims

P at e ntan spr ic

1. Crawler track with a rotatably coupled to each other from bottom plates (15), endless nd to drive them via a driven, at least one cam ring (11) having Turas (10) guided caterpillar track chain, each individual floor plate (15) each having at least one Höckerschake (15 16) with aligned in the direction of the crawler chain chain H öckerschakenflanken (17) and the Höckerschaken (16) during rotation of the caterpillar chain on the Turas (10) for engaging in on the circumference of the Turas (10) arranged radially projecting cam (12) formed recesses (13) are arranged, characterized in that the bottom plates (15) by means of at least one arranged between them, a parallel displacement of the bottom plates (15) against each other enabling Verbi tion tab (19) are coupled together and the cams (12) and the Höckerschaken (16) each have an angular shape with rectilinear cam flanks ( 14) and Höckerschakenflanken (17) have such that during one revolution of the caterpillar track chain on the Turas (10) the leading cam flanks (14) of all in engagement with the Höckerschaken (16) located cam (12) in all wear states of the caterpillar track in area Plant on the Höckerschaken flanks (17) »

, ϊ 6 -

in such a way that a tread-like Abstützimg the caterpillar chain on the Turas (10) exclusively on the cam flank n (14) and Höckerschakenflanken (1 7) of the in circulation in each case in engagement cams (12) and Höckerschaken (16) is given and that, in the case of a service-dependent elongation of the connection sheets (19) and concomitant enlargement of the pitch of the caterpillars, the parallel displacement of two adjacent floor panels (15) by the at least one connection tab (1) Bumpkin flanks (17) of the tucking hook (16) in engagement with the turf (10) beginning with the last engaged stool barge to the first engaging tucking hook on the cam flanks (14) of the individual successive cams (12) while maintaining of the surface area slide outwards, so that the centers of each effective Kontaktfiächen between bumps (16) and cams (12) lie on a helical path around the center of the turret (10).

Crawler undercarriage according to claim 1, characterized in that in the new state of the caterpillars sc hook chain between two cams (12) engaging Höckerschaken (1 6) on the one hand to the leading cam flanks (14b) abut and on the opposite side at least linearly at the opposite rear Cam flank (14a) of the adjacent in the direction of rotation. Support the cam (12),

Crawler undercarriage according to claim 1 or 2, characterized in that the tines! the hump-rocker flanks (17) with the plane of the bottom plate (15) is between 10 degrees and 75 degrees and in particular by that of the material passing through and the caterpillars chain tension acting biasing and driving forces predetermined friction is determined,

4. Crawler undercarriage according to one of claims 1 to 3, characterized in that two Verbindungsläehen (19) on both sides of the humps (16) of adjacent floor panels (15) are arranged,

5. crawler undercarriage according to one of claims 1 to 4, characterized in that each Verbindungsiasehe (19) with its end holes (20) on, the humpsaw (16) mounted bolt is placed.

6. crawler undercarriage according to claim 4 or 5, characterized

in that the hump shackles (16) of each bottom plate (15) are enclosed on both sides by guide webs (18) and the bolts for receiving the connecting straps (19) are arranged on the guide webs (18),

7. crawler undercarriage according to one of claims 1 to 5, characterized in that the humps (16) of each bottom plate (15) on its both sides by guide webs (18) are included and at a distance from the two-sided Führungssiegen (18) each have an additional Holding web (21) on the bottom plate (15) is arranged, wherein in each case a connecting tab (19) in the intermediate space (24) between the guide webs (18) and the retaining webs (21) and arranged in retaining webs (21) and guide webs (18 ) specified bolt is fixed.

8. crawler undercarriage according to one of claims 1 to 5 ₅ wherein on the Turas two congruent with each other spaced cam rings and on the mutually coupled floor panels two in the arranged equal distance arranged voa Höckerscliaken, characterized in that in each case a connecting plate (19) between two bottom plates (15) in which between the two Höckerscaaken (16) of each bottom plate (15) existing intermediate space (23) are arranged, wherein the Höckerschaken (16) each have openings (25) for inserting the Verbindiagsiasche (19) passing through bolts.